diff --git a/CHANGELOG b/CHANGELOG
index 11eaf1b6c..89db33d65 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -29,10 +29,13 @@
 
 * Pending changes since 26.3.27
 
-- bugfix: MAKE-PACKAGE destructively modified definning form conses of the
-  package local nicknames breaking bytecmp on such packages (#839)
+- bugfix: MAKE-PACKAGE destructively modified defining form's cons cells of
+  the package local nicknames, breaking package literals in bytecmp (#839)
 
-- Support for Microsoft Visual Studio compilers has been dropped
+- build: support for Microsoft Visual Studio Compiler has been dropped
+
+- bugfix: the first environment is now always page-aligned by using the
+  same allocation mechanism as all subsequent envs (#828)
 
 * 26.3.27 changes since 24.5.10
 
diff --git a/src/c/main.d b/src/c/main.d
index 7f06fe6a7..f00464c1e 100644
--- a/src/c/main.d
+++ b/src/c/main.d
@@ -49,7 +49,6 @@
 /******************************* EXPORTS ******************************/
 
 const char *ecl_self;
-static struct cl_env_struct first_env;
 
 /************************ GLOBAL INITIALIZATION ***********************/
 
@@ -419,7 +418,7 @@ struct cl_core_struct cl_core = {
 
   .system_properties = ECL_NIL,
 
-  .first_env = &first_env,
+  .first_env = NULL,
 #ifdef ECL_THREADS
   .processes = ECL_NIL,
 #endif
@@ -498,6 +497,9 @@ cl_boot(int argc, char **argv)
   setbuf(stdin,  stdin_buf);
   setbuf(stdout, stdout_buf);
 #endif
+
+  /* The first environment must be available at all times. */
+  cl_core.first_env = _ecl_alloc_env(NULL);
   init_process();
 
   ARGC = argc;